Constables are certified peace officers; they have the same enforcement powers as other peace officers and often participate actively in criminal investigations. In many communities, constables focus on truancy cases. In addition to performing traditional law enforcement functions, the constable also serves as bailiff for the justice courts and serves subpoenas and papers necessary to the functioning of both the civil and criminal justice systems. The constable also plays an important role in making sure the judgments rendered in civil cases are satisfied. The constable also must keep accounts of the financial transactions of the office and is responsible for property seized or money collected by court order.

As with all elected county officials, the constable has ultimate authority over the operations of the office, including the authority to hire and fire personnel and direct their daily activities. The constable also has authority to determine how to use all other resources allocated to the office during the budget process.